Carlos uses a company's blog to announce new merchandise, get feedback from customers, and allow customers to share information about his products. His frequent customers use his his blog on a regular basis to keep up with what is happening with the company's products and to share product preferences. This is called

Cooperation among different people can occur

A) even if most people know nothing about one another. B) only if at least 10% of the people know one another personally. C) only if the majority of people know one another personally. D) only if everybody knows one another personally.

Commercial banks are financial intermediaries, as are ________

A) household savers B) state and local governments C) insurance companies D) organized exchanges